Can I use a “green card” when signing up for your site?

Yes. The Colorado Secretary of State will accept a “green card” as an accepted form of identification when applying to be a Notary Public provided that this identification contains a photograph. Since the state will accept it, so will we. Since this identification is issued by the United States government, use “United States” as the “Identification State or Country of Issuance” in the registration form.